AGD4A
Air Gap Drains | for 1/2” - 12” Reduced Pressure Backflow Preventers
SUBMITTAL SHEET
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DESCRIPTION
Apollo® Air Ga p Drains (AGD 4Ax) are designed to funnel minor discharges from a Reduced Pressure Back flow Preventer’s relief valve due to line pressure fluctuations
and/or minor check valve fouling into the drainage system. Drainage piping is easily attached to the threaded portion of the AGD. The female NPT size is listed in the
table under “Outlet Connection”. Drainage piping may be attached with a coupling and the appropriate cement or with a flexible pipe coupling. Piping compatible
with the outlet is listed in the table under “Outlet Pipe Size”.
Air Gap Drains are NOT designed to collect the full discharge capacity of the relief valve. Please refer to page 3 for relief valve full discharge rates.
STANDARD MATERIALS LIST
ABS
ABS
ABS
ABS and PVC
ABS
Epoxy Coated Steel
Stainless Steel
4A (1/2” - 2”)
AGD4A1
AGD4A12
AGD4A2
AGD4A6
AGD4A8
AGD4A12 IN
FASTENERS
RP SIZE AIR GAP PART NUMBER
1/2" AGD4A1 6-1/2 3-3/8 1" FNPT 2-5/8 1-1 /4” 0.1
3/4 " AGD4A1 6-1/2 3-3/8 1" FNPT 2-5/8 1-1/4” 0.1
1" AGD4A1 6-5/8 3-3/8 1" FNPT 2-5/8 1- 1/4" 0.1
1-1/4" & 1-1/2" AGD4A112 8-1/2 4-1/8 1-1/2 " FNPT 3-1/2 2" 0.2
2" AGD4A 2 10 5-3/8 2" FNPT 4-1 /4 2-1/2" 0.35
A B C D
DIMENSIONS (IN.)
OUTLET CONNECTION
(FNPT)
RPS 40
RPS SIZE AIR GAP PART NUMBER
3/8" & 1/2" AGD4012 6-1/2 3-3/8 1" FNPT 2-5/8 1- 1/4" 0.1
3/4" & 1" AGD401 8- 1/4 4 -1/8 1-1/2 " FNPT 3-1/2 2" 0.2
A B C D
DIMENSIONS (IN.)
OUTLET CONNECTION
(FNPT)
WT.
(LB.)
WT.
(LB.)
(704) 841-6000
apollovalves.com
SS1177 © 12/18 Page 1 of 3
This specification is provided for reference only. Apollo reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Apollo products previously or subsequently sold.
Most current information available at apollovalves.com.
SUBMITTAL SHEET
AGD4A6 (2-1/2” - 6”)
RP SIZE AIR GAP PART NUMBER
2-1/2" AGD4A6 11.28 - 2.63 3.13 2” 0.7
3" AGD4A6 11.28 - 2.63 3.13 2” 0.7
4" AGD4A6 12.02 - 2.63 3.13 2” 0.7
6" AGD4A6 13.32 - 2.63 3.13 2” 0.7
2-1/2" AGD4A6 - 10.87 2.63 3.13 2” 0.7
3" AGD4A6 - 10.87 2.63 3.13 2” 0.7
4" AGD4A6 - 10.51 2.63 3.13 2” 0.7
6" AGD4A6 - 11.76 2.63 3.13 2” 0.7
A B C D
DIMENSIONS (IN.)
RPLF4A
RPLF4AN
OUTLET CONNECTION
(FNPT)
AGD4A8 (8”)
WT.
(LB.)
RP STYLE AIR GAP PART NUMBER
RPLF4A AGD4A8 21.3 9.1 3" 2-1/2" 1.5
RPLF4AN AGD4A8 19.8 9.1 3" 2-1/2" 1.5
(704) 841-6000
apollovalves.com
SS1177 © 12/18 Page 2 of 3
This specification is provided for reference only. Apollo reserves the right to change any portion of this specification without
notice and without incurring obligation to make such changes to Apollo products previously or subsequently sold.
Most current information available at apollovalves.com.
DIMENSIONS (IN.) OUTLET PIPE SIZE
A B C
OUTLET CONNECTION
(FNPT)
WT.
(LB.)